ninja is a valid English word

Scrabble validity: valid ( international - Sowpods, US - Twl06 )
iScramble validity: valid
QuickWords validity: valid

Meanings

Noun (COUNTABLE)

(martial arts) A person trained in ninjutsu, especially (historical) one used for espionage, assassination, and other tasks requiring stealth during Japan's shogunate period.
(figurative) A person considered similarly skillful to the historical ninja, especially in covert or stealthy operation.
(figurative) A person considered to look like the historical ninja in some way, including (Mongolia historical slang) amateur private miners.

Adjective (NOT COMPARABLE)

Of or related to ninjas in their various senses.

Verb

(ambitransitive) To act or move like a ninja, particularly with regard to a combination of speed, power, and stealth.
(Internet slang) Synonym: preempt: to supersede and invalidate a response by posting immediately before it.
• When I hit post, I saw that Blue Emu had ninja'd me, so I just deleted my reply.
(online gaming slang) To claim an item through abuse of game mechanics.
• That damn warrior ninja'd an epic-quality wand even though he can't even use it!

ninja is a Scrabble valid word

ninja

• International English (Sowpods) - The word is valid in Scrabble ✔
• US English (TWL06) - The word is valid in Scrabble ✔
• 00 points

ninja is an iScramble, QuickWords valid word

ninja

• The word is valid in iScramble ✔
• The word is valid in QuickWords ✔
• 00 points

Same letters words (Anagrams)

• JINAN

Same letters plus one

• FINJAN
• JANANI
• JANIAN
• JANINE
• JANNIE
• JINCAN
• JINGAN
• JINNAH
• JINNIA
• NANAJI
• NINJAS
• TINJAN
• YANJIN

Same letters minus one

• INNA
• JAIN
• JANN
• JIAN
• JINN
• NAIN
• NAJI
• NANI
• NINA